The invention discloses natural pure-color
facial tissue and a preparation method thereof, and belongs to the technical field of paper for daily use. The
facial tissue is prepared from a mixed
raw material of 20%-30% of
softwood pulp and 70%-80% of
hardwood pulp through the procedures of pulping, neutral
cellulase catalytic treatment, wet pressing forming,
drying and post-
processing. The method is characterized in that fluorescent agents and essence are not added in the whole process,
fiber pigments are effectively removed under mild conditions through an optimized
enzyme treatment process (the removal rate is larger than or equal to 85%), and meanwhile the original color of the
plant fiber shallow rice is reserved (the
color difference delta E is smaller than 1.5). The obtained product has excellent physical properties, the transverse tensile strength is larger than or equal to 2.5 N / m, the water absorption speed is smaller than or equal to 3 s, and
skin tests prove that the product is non-irritant. The invention successfully solves the contradiction between the
chemical residue of the traditional bleached
facial tissue and the insufficient performance of the
natural product, and provides the high-quality facial tissue which is safe, mild, stable in performance, environment-friendly and high in quality.